$ git clone -n https://src.fedoraproject.org/rpms/ocaml-sexplib.git /var/lib/mock/f39-build-1506541-35198/root/chroot_tmpdir/scmroot/ocaml-sexplib
Cloning into '/var/lib/mock/f39-build-1506541-35198/root/chroot_tmpdir/scmroot/ocaml-sexplib'...
$ git fetch origin 7fd19d017e586f922424aad789ef26175a23aaf6:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/ocaml-sexplib
 * [new ref]         7fd19d017e586f922424aad789ef26175a23aaf6 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 7fd19d0 Rebuilt for https://fedoraproject.org/wiki/Fedora_39_Mass_Rebuild